Improvement in rectifying apparatus



A. J. & A.'B. GALLAGHER.

Reotifying Apparatus.

N0'.'l99,281. Patented Jan. 15, 1878..

. I .Zhvenfors Wm 1L gijw NPUERS, PRO+ L|THOGRAPMER WASHINGTON, 01C 1.

UNITED STATES PATENT OEEIoE.

ANTHONY J. GALLAGHER AND AUGUSTUS B. GALLAGHER, OF PHILA- DELPHIA,PENNSYLVANIA.

IMPROVEMENT IN RECTIFYING APPARATUS.

Specification forming part of Letters Patent No. 199,281, dated January15, 1878; application filed November 19, 1877.

To all whom it may concern:

Be it known that we, ANTHONY J. GALLA- GHER and AUGUSTUS I B. GALLAGHER,of

Philadelphia, Pennsylvania, have invented a new and useful ImprovementinRectifyin g Apparatus, of which the following is a specificatiOn:

Our invention relates to an improvement in that class of rectifyingapparatus in which a series of rectifying cylinders fed from asupply-pipe common to all are used; the main object of our inventionbeing to-render each cylinder independent of the others as regards thepressure of the liquid upon the filtering material within said cylinder,an object which we attain in the following manner, reference being hadto the accompanying drawing, in Which Figure 1 is a side view of aseries of rectifying cylinders with our invention applied thereto; andFig. 2, a side view, partly in section, and drawn to an enlarged scale,of one of the cylinders and its connections.

In rectifying apparatus of the character to which our invention relatesit is advisable, after filling a cylinder with fresh filtering material,to admit the liquor to the same at a comparatively low pressure atfirst, and to gradually increase the pressure until it reaches themaximum.

Unless this is done the forcing of the liquor at a high pressure throughthe fresh filtering material soon exhausts the latter, and renders itincapable of properly performing the duty for which it is intended.

In order to permit one or more freshly-filled cylinders of a series tobe worked at a low pressure, without at the same time lowering thepressure upon the other cylinders, we use the appliances shown in thedrawing,in which A A are the rectifying-cylinders; B, the mainsupply-pipe and D, branch pipes, extending from the main pipe B to therectifying-cylinders.

The branches D do not communicate directly with the cylinders A, theliquor in its passage from the pipe B to each cylinder being compelledto pass through a valve-chest, E, containing a regulating-valve, thestem of which is connected to a lever, to, near the inner end, the outerend of the lever being furnished with a pendent rod, w, for receivingweights y.

These weights tend to keep the valve open,

while the pressure within the cylinder tends to close the valve, so thatas soon as the pressure within the cylinder becomes greater than thedownward pressure which the weights exert on the valve the latter willbe closed, or partially closed, until the pressure in the cylinder isreduced to an extent determined by the weights on the lever.

It will thus be seen that by properlyweighting the levers a, any desiredpressure may be maintained in any of the cylinders, so that eachcylinder of a set is, so far as regards the pressure within the same,independent of all the others.

The valve is duplcxthat is, there are two valves on the one stem, andtwo seats in the chest, the lower valve being the largest.

It is not absolutely necessary, however, in. carrying out our invention,that the precise construction of valve and valve-chest and mode ofweighting the valve which-we have shown should be used in all cases.

A water-pipe, 1), extends along the row of cylinders A, above the same,and is connected therewith by means of valved branches d, so that whenit is desired to wash the filtering material in any of the cylinders thefiow of liquor through the same may be stopped, and water caused to passthrough the cylinder until the desired washing operation has beeneffected.

A pressure-gage, e, is combined with each of the cylinders A, in orderto indicate to the attendant the amount of pressure within the same.

We claim as our invention- The combination, in rectifying apparatus, ofa series of filtering-vessels, A, a feed-pipe, B, common to all thecylinders, the system of pipes and cocks, whereby the said vessels arerendered independent of each other, and the loaded valves, by theautomatic action of which a uniform pressure may be maintained in eachvessel independently of the uniform pressure maintained in the othervessels, all

I substantially as set forth.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

ANTHONY J. GALLAGHER. AUGUSTUS B. GALLAGHER. Witnesses:

JAMES REILLY, HARRY SMITH.

